package cn.tedu.jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class JDBCLogin {
    public static void main(String[] args) {
        try(Connection connection=DBUtil.getConnection();)
        {
            Scanner scanner = new Scanner(System.in);
            System.out.println("请输入用户名：");
            String username=scanner.nextLine();
            System.out.println("请输入密码：");
            String password=scanner.nextLine();
            //执行SQL
            Statement statement = connection.createStatement();
            String sql="SELECT nickname FROM userinfo WHERE username='"+username+"' AND password='"+password+"'";
            ResultSet r= statement.executeQuery(sql);
            //判断
            if(r.next()){//登录成功
                String nickname = r.getString("nickname");
                System.out.println("登录成功，欢迎您："+nickname);

            }else{//登录失败
                System.out.println("用户名或密码错误");
            }
        }catch (SQLException e){
            throw new RuntimeException(e);
        }
    }
}
